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# If given two arguments to cd, replace the first with the second in $PWD,
# emulating a Zsh function that I often find useful; preserves options too
__cd() {
local -a opts
while getopts elP opt; do
opts["${#opts[@]}"]="-$opt"
done
shift "$(($OPTIND-1))"
if [[ "$#" -eq 2 ]]; then
if [[ "$PWD" == *"$1"* ]]; then
builtin cd "${opts[@]}" "${PWD/$1/$2}"
else
printf 'bash: cd: could not replace substring\n'
return 1
fi
else
builtin cd "${opts[@]}" "$@"
fi
}
alias cd='__cd'
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